Its always been easy to track down the pinout locations of the ECU, but also on the engine harness are two larger but equally important connectors that go to the body harness...

It was important for me to know the purpose of each of these connectors because I am attempting to streamline my entire wiring harness, and make it "better" than OEM. I also am running a fully standalone engine management system, and it was important that I figure out what some of these connections were for so that I could retain complete stock functionality. Two of the pins are unknown... I searched through the whole of the wiring diagram and I could not find any mention of IG2 pin3 or pin17... I know the white-red wire goes to the check connector, and I believe the same for the white-blue wire... so they arent that important, but ill just make sure to reconnect them back in the same way I found them. CKC means check connector, and some of them I dont know what they mean, but I can tell you where they go and speculate on what their purpose is, really the most confusing seems to be the white-blue series of wires that go to the cruise, coil, CKC, and airbags.

Anyways, here are the pin numbers for the two connectors as described in the BGB (you are looking at the ones labeled IG1 and IG2). Note that the numbers reflect as if you are looking into the open end of the female connector.